package com.heima.user.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dtos.LoginDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.model.user.vos.LoginVo;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.ApUserService;
import com.heima.utils.common.AppJwtUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;

@Service
@Transactional
@Slf4j
public class ApUserServiceImpl extends ServiceImpl<ApUserMapper, ApUser> implements ApUserService {
    /**
     * app端登录功能
     *
     * @param loginDto
     * @return
     */
    @Override
    public ResponseResult login(LoginDto loginDto) {
        // 正常登录
        if (StringUtils.isNotBlank(loginDto.getPhone()) &&
                StringUtils.isNotBlank(loginDto.getPassword())) {
            // 1.1 根据手机号查询用户信息
            ApUser dbUser = getOne(Wrappers.<ApUser>lambdaQuery()
                    .eq(ApUser::getPhone, loginDto.getPhone()));
            if (dbUser == null) {
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST, "用户信息不存在");
            }

            // 1.2 比对密码
            String salt = dbUser.getSalt();
            String password = loginDto.getPassword();
            String passwordMD5 = DigestUtils.md5DigestAsHex((password + salt).getBytes());// md5加密
            // 拿加密后的密码与真正密码比对
            if (!passwordMD5.equals(dbUser.getPassword())) {
                return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
            }

            // 1.3 密码正确，返回jwt
            String token = AppJwtUtil.getToken(dbUser.getId().longValue());
            LoginVo loginVo = new LoginVo();
            BeanUtils.copyProperties(dbUser, loginVo);
            Map<String, Object> map = new HashMap<>();
            map.put("token", token);
            map.put("user", loginVo);

            return ResponseResult.okResult(map);
        } else {
            // 游客登录
            Map<String, Object> map = new HashMap<>();
            map.put("token", AppJwtUtil.getToken(0L));
            return ResponseResult.okResult(map);
        }
    }
}
